642502631116 has 6 divisors (see below), whose sum is σ = 1124379604460. Its totient is φ = 321251315556.

The previous prime is 642502631083. The next prime is 642502631131. The reversal of 642502631116 is 611136205246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80312828886 + ... + 80312828893.

Almost surely, 2^642502631116 is an apocalyptic number.

It is an amenable number.

642502631116 is a deficient number, since it is larger than the sum of its proper divisors (481876973344).

642502631116 is a wasteful number, since it uses less digits than its factorization.

642502631116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160625657783 (or 160625657781 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 642502631116 in words is "six hundred forty-two billion, five hundred two million, six hundred thirty-one thousand, one hundred sixteen".